tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* linux/include/asm-arm/arch-ixp2000/debug-macro.S
2 *
3 * Debugging macro include header
4 *
5 * Copyright (C) 1994-1999 Russell King
6 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12*/
13
14 .macro addruart,rx
15 mrc p15, 0, \rx, c1, c0
16 tst \rx, #1 @ MMU enabled?
17 moveq \rx, #0xc0000000 @ Physical base
18 movne \rx, #0xfe000000 @ virtual base
19 orrne \rx, \rx, #0x00f00000
20 orr \rx, \rx, #0x00030000
21#ifdef __ARMEB__
22 orr \rx, \rx, #0x00000003
23#endif
24 .endm
25
26 .macro senduart,rd,rx
27 strb \rd, [\rx]
28 .endm
29
30 .macro busyuart,rd,rx
311002: ldrb \rd, [\rx, #0x14]
32 tst \rd, #0x20
33 beq 1002b
34 .endm
35
36 .macro waituart,rd,rx
37 nop
38 nop
39 nop
40 .endm